Finding the Fourth Proportional to 13,308, 18,365.18 and 7,339.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308 : 18,365.18 = 7,339.89 : x
2. Step 2: Convert to fraction form
   13,308/18,365.18 = 7,339.89/x
3. Step 3: Cross multiply
   13,308x = 18,365.18 × 7,339.89
4. Step 4: Simplify right side
   13,308x = 134,798,401.03
5. Step 5: Solve for x
   x = 134,798,401.03/13,308
6. Step 6: Final answer
   x = 10,129.13